calorimetry

Question 1

poorly insulated calorimeters

Answer 1

• do not allow the energy content to be determined accurately
• Need to extrapolate to the time when the calorimeter was swtiched on to be able to determine an appropriate change in temperature

Question 2

Random errors affecting calorimeter

Answer 2

Not all the food/ substance is combusted in the calorimeter
-> energy content lower than should be -> determine for only food ACTUALLY combusted

Incomplete cobustion in calorimeter-> energy content lower than should be - lack of oxygen leading to less energy being released per amount of food combusted

temperature recorded when food combusted was inaccurate- change in determined energy content

Can be overcome by repeating experiment multiple times to determine inaccurate results